1.   Attempts to change the land-based activities that cause coastal pollution would have far-reaching economic, political and social consequences.

2.   Coal fell into disfavour because burning it caused pollution.

3.   Companies that continue to cause pollution will now face heavy fines.

4.   Most air pollution is caused by cars.

5.   The mines have caused serious pollution of the river system.

6.   The oil wells continued to burn, causing atmospheric pollution on a massive scale.

7.   An official from the Inspectorate of Pollution had expressed worries that the scheme would cause more pollution but today those criticisms have been withdrawn.

8.   Furthermore, the worst air pollution is caused by cold engines in congested conditions -- and motorists, in their confined space, breathe the worst of that.